Unsurprisingly, Brazil is by far the most populous country in South America with over 200 million residents. With nearly 50 million residents as of 2018, what is the second-most populous country on the continent?

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Fact: Ninety percent of Earth's population lives in the Northern Hemisphere.


1. Unsurprisingly, Brazil is by far the most populous country in South America with over 200 million residents. With nearly 50 million residents as of 2018, what is the second-most populous country on the continent?